The Digi DataFire SYNC 2000 Family of intelligent synchronous communication adapters provides advanced server-based WAN solutions for PCI and PMC environments. Available in two- and four- port models, the DataFire SYNC 2000 supports Frame Relay, X.25 and PPP under Microsoft Windows NT 4.0, Microsoft Windows 2000 and Microsoft Windows XP. SNA is also supported when combined with Microsoft's SNA Server or the IBM Network Communications Server.